Recognition of Heavy Metal Ions by Using E-5-((5-Isopropyl-3,8-Dimethylazulen-1-yl) Dyazenyl)-1H-Tetrazole Modified Electrodes

Chemically modified electrodes (CMEs) based on polymeric films of E-5-((5-isopropyl-3,8-dimethylazulen-1-yl) diazenyl)-1H-tetrazole (L) deposited the surface glassy carbon electrode have been used for recognition heavy metal (Me) ions. The electrochemical study L was done by three methods: differential pulse voltammetry (DPV), cyclic (CV), and rotating disk (RDE). CV, DPV, RDE studies were performed at different concentrations in 0.1 M tetrabutylammonium perchlorate solutions acetonitrile. formed successive cycling or controlled potential electrolysis (CPE). film formation proven recording CV curves CMEs ferrocene solution. prepared charges potentials detection Synthetic samples ions (Cd(II), Pb(II), Cu(II), Hg(II)) between 10−8 10−4 analyzed. most intense signal obtained Pb(II) ion (detection limit about M). can be detected these waters such concentrations. ability ligand to form complexes with Hg(II) also tested UV-Vis spectrometry. results showed Me(II)L2 complexes.